The major co-receptor of VEGFR-1 and VEGFR-2, Neuropilin-1 (NRP-1), has only been investigated in angiomatous meningiomas on an mRNA level so far (Nassehi et al. 2013) while there is a lack of data on higher grade meningiomas. The gene discussed is KDR; the disease is Angiomatous Meningioma.